56 (#102) ############################################# WOOLLEN AND WORSTED SPINNING RCAST CLOER Don Fig. 17.-Carding Engine for the Manufacture of Felts doffer? Perhaps one further sug- gestion should be given. So long as fibres lie across the cylinders -across the direction of move- ment—will they be liable to be impeded in their passage. Ap- proximation to the direction of cylinder movement in the" lie' of the fibres will always give a better chance of escaping the next carding contact. This thought brings up the difficult question : should count and crown be the same in carding surfaces ?should not the card- clothing on the earlier cylinders be striated in the direction of movement to facilitate the "lying - in” and consequent passage forward of the material ? This is certainly a question which carding engineers should consider. * (C) Method of Final Delivery. -The method of final delivery is one of the most important matters which has to be decided. The simplest form of delivery is that illustrated in Fig. 17, in which a thin film of wool the full width of the carder is built up layer by layer into a thick film of wool of considerable length. This spongy mass is docco 58